Various used symbols are only visible through transitive includes.
These transitive includes are about to go away.

Explicitly include the necessary headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 lib/vdso/getrandom.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/vdso/getrandom.c b/lib/vdso/getrandom.c
index 440f8a6203a69a6462aafee4ad8d5670cef6a353..7e29005aa208b498b68f16d3df80b048dce8ee21 100644
--- a/lib/vdso/getrandom.c
+++ b/lib/vdso/getrandom.c
@@ -7,8 +7,11 @@
 #include <linux/minmax.h>
 #include <vdso/datapage.h>
 #include <vdso/getrandom.h>
+#include <vdso/limits.h>
 #include <vdso/unaligned.h>
+#include <asm/barrier.h>
 #include <asm/vdso/getrandom.h>
+#include <uapi/linux/errno.h>
 #include <uapi/linux/mman.h>
 #include <uapi/linux/random.h>
 

-- 
2.51.0